Besides the fact that this invention consists of the plane surface which possesses four sides, three sides of the above-mentioned plane surface are the straight line, the side of remainder 1 is curved line, from the center of the above-mentioned curved line aspect it is opposed on the above-mentioned curved line aspect, length to the center the side, besides the fact that it is opposed on the above-mentioned curved line aspect, is 0.35 - 0.70 times that length the side, length of two aspects which it adjoins with the above-mentioned curved line aspect, besides the fact that it is opposed on the curved line aspect, regards the artificial valve leaf which is used for the aorta valve disease which features that they are 0.20 - 0.50 times that length the side. In addition, as for this invention furthermore details are something regarding the templet which consists of the grip section the lateral plate and the lower board and according to need in regard to the templet in order to produce the above-mentioned artificial valve leaf.本発明は4つの側面を有する平面からなり、上記平面の3つの側面が直線であり、残り1つの側面が曲線であり、上記曲線面の中心から上記曲線面に対向される他側面の中心までの長さは、上記曲線面に対向される他側面の長さの0.35~0.70倍であり、上記曲線面と隣接した二面の長さは、曲線面に対向される他側面の長さの0.20~0.50倍であることを特徴とする大動脈弁膜疾患に使用される人工弁膜葉に関する。また、本発明は上記人工弁膜葉を製造するためのテンプレートに関し、さらに詳しくは、上板、下板及び必要に応じて把持部で構成されたテンプレートに関するものである。
